1 # SPDX-License-Identifier: GPL-2.0
3 # From Coreboot src/northbridge/intel/sandybridge/Kconfig
5 # Copyright (C) 2010 Google Inc.
8 config NORTHBRIDGE_INTEL_IVYBRIDGE
10 select CACHE_MRC_BIN if HAVE_MRC
12 imply ENABLE_MRC_CACHE
26 if NORTHBRIDGE_INTEL_IVYBRIDGE
28 config DCACHE_RAM_BASE
31 config DCACHE_RAM_SIZE
34 config DCACHE_RAM_MRC_VAR_SIZE
37 config CPU_SPECIFIC_OPTIONS
47 bool "Enable VMX for virtualization"
50 Virtual Machine Extensions are provided in many x86 CPUs. These
51 provide various facilities for allowing a host OS to provide an
52 environment where potentially several guest OSes have only
53 limited access to the underlying hardware. This is achieved
54 without resorting to software trapping and/or instruction set
55 emulation (which would be very slow).
57 Intel's implementation of this is called VT-x. This option enables
58 VT-x this so that the OS that is booted by U-Boot can make use of
59 these facilities. If this option is not enabled, then the host OS
60 will be unable to support virtualisation, or it will run very